with 🌳︎🍁︎ broadleaves that are evergreen , with each tooth tipped by a stiff | sharp spine , and . . .
surface=glossy;  margin (edge)=undulate
English holly Ilex aquifolium

surface=dull;    margin (edge)=not undulate
American holly Ilex opaca

OR it is NOT (plant is deciduous, with NO stiff sharp spines), but . . .

with leaf margins (edges) having teeth so small I can barely see them with the naked eye, and . . .
shrub, height=<1 m (<3 ft);  leaf shape=oblong (2× longer than wide);  stems=hairless;  wet feet
alderleaf buckthorn Rhamnus alnifolia

tree;  leaf shape=oblong (2× longer than wide);  stems=hairy, dark
glossy buckthorn Frangula alnus

tree;  leaf shape= oval (barely longer than wide);  twigs=hairless, spine-tipped
common buckthorn Rhamnus cathartica

OR it does NOT (leaf margins=▲▲ singly-toothed ), but with . . .
each leaf lateral vein terminates in multiple teeth
🍒︎ cherry 🌰︎ chestnut cottonwood elm poplar serviceberry

Learn more

plant terminology